1*7330f729Sjoerg //===- FileWriter.cpp -------------------------------------------*- C++ -*-===//
2*7330f729Sjoerg //
3*7330f729Sjoerg // The LLVM Compiler Infrastructure
4*7330f729Sjoerg //
5*7330f729Sjoerg // This file is distributed under the University of Illinois Open Source
6*7330f729Sjoerg // License. See LICENSE.TXT for details.
7*7330f729Sjoerg //
8*7330f729Sjoerg //===----------------------------------------------------------------------===//
9*7330f729Sjoerg
10*7330f729Sjoerg #include "llvm/DebugInfo/GSYM/FileWriter.h"
11*7330f729Sjoerg #include "llvm/Support/LEB128.h"
12*7330f729Sjoerg #include "llvm/Support/raw_ostream.h"
13*7330f729Sjoerg #include <cassert>
14*7330f729Sjoerg
15*7330f729Sjoerg using namespace llvm;
16*7330f729Sjoerg using namespace gsym;
17*7330f729Sjoerg
~FileWriter()18*7330f729Sjoerg FileWriter::~FileWriter() { OS.flush(); }
19*7330f729Sjoerg
writeSLEB(int64_t S)20*7330f729Sjoerg void FileWriter::writeSLEB(int64_t S) {
21*7330f729Sjoerg uint8_t Bytes[32];
22*7330f729Sjoerg auto Length = encodeSLEB128(S, Bytes);
23*7330f729Sjoerg assert(Length < sizeof(Bytes));
24*7330f729Sjoerg OS.write(reinterpret_cast<const char *>(Bytes), Length);
25*7330f729Sjoerg }
26*7330f729Sjoerg
writeULEB(uint64_t U)27*7330f729Sjoerg void FileWriter::writeULEB(uint64_t U) {
28*7330f729Sjoerg uint8_t Bytes[32];
29*7330f729Sjoerg auto Length = encodeULEB128(U, Bytes);
30*7330f729Sjoerg assert(Length < sizeof(Bytes));
31*7330f729Sjoerg OS.write(reinterpret_cast<const char *>(Bytes), Length);
32*7330f729Sjoerg }
33*7330f729Sjoerg
writeU8(uint8_t U)34*7330f729Sjoerg void FileWriter::writeU8(uint8_t U) {
35*7330f729Sjoerg OS.write(reinterpret_cast<const char *>(&U), sizeof(U));
36*7330f729Sjoerg }
37*7330f729Sjoerg
writeU16(uint16_t U)38*7330f729Sjoerg void FileWriter::writeU16(uint16_t U) {
39*7330f729Sjoerg const uint16_t Swapped = support::endian::byte_swap(U, ByteOrder);
40*7330f729Sjoerg OS.write(reinterpret_cast<const char *>(&Swapped), sizeof(Swapped));
41*7330f729Sjoerg }
42*7330f729Sjoerg
writeU32(uint32_t U)43*7330f729Sjoerg void FileWriter::writeU32(uint32_t U) {
44*7330f729Sjoerg const uint32_t Swapped = support::endian::byte_swap(U, ByteOrder);
45*7330f729Sjoerg OS.write(reinterpret_cast<const char *>(&Swapped), sizeof(Swapped));
46*7330f729Sjoerg }
47*7330f729Sjoerg
writeU64(uint64_t U)48*7330f729Sjoerg void FileWriter::writeU64(uint64_t U) {
49*7330f729Sjoerg const uint64_t Swapped = support::endian::byte_swap(U, ByteOrder);
50*7330f729Sjoerg OS.write(reinterpret_cast<const char *>(&Swapped), sizeof(Swapped));
51*7330f729Sjoerg }
52*7330f729Sjoerg
fixup32(uint32_t U,uint64_t Offset)53*7330f729Sjoerg void FileWriter::fixup32(uint32_t U, uint64_t Offset) {
54*7330f729Sjoerg const uint32_t Swapped = support::endian::byte_swap(U, ByteOrder);
55*7330f729Sjoerg OS.pwrite(reinterpret_cast<const char *>(&Swapped), sizeof(Swapped),
56*7330f729Sjoerg Offset);
57*7330f729Sjoerg }
58*7330f729Sjoerg
writeData(llvm::ArrayRef<uint8_t> Data)59*7330f729Sjoerg void FileWriter::writeData(llvm::ArrayRef<uint8_t> Data) {
60*7330f729Sjoerg OS.write(reinterpret_cast<const char *>(Data.data()), Data.size());
61*7330f729Sjoerg }
62*7330f729Sjoerg
writeNullTerminated(llvm::StringRef Str)63*7330f729Sjoerg void FileWriter::writeNullTerminated(llvm::StringRef Str) {
64*7330f729Sjoerg OS << Str << '\0';
65*7330f729Sjoerg }
66*7330f729Sjoerg
tell()67*7330f729Sjoerg uint64_t FileWriter::tell() {
68*7330f729Sjoerg return OS.tell();
69*7330f729Sjoerg }
70*7330f729Sjoerg
alignTo(size_t Align)71*7330f729Sjoerg void FileWriter::alignTo(size_t Align) {
72*7330f729Sjoerg off_t Offset = OS.tell();
73*7330f729Sjoerg off_t AlignedOffset = (Offset + Align - 1) / Align * Align;
74*7330f729Sjoerg if (AlignedOffset == Offset)
75*7330f729Sjoerg return;
76*7330f729Sjoerg off_t PadCount = AlignedOffset - Offset;
77*7330f729Sjoerg OS.write_zeros(PadCount);
78*7330f729Sjoerg }
79